repository.petra.ac.idrepository.petra.ac.id/17396/1/Publikasi1_04013_2694.pdf · Sari Winahjoe,...
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repository.petra.ac.idrepository.petra.ac.id/17396/1/Publikasi1_04013_2694.pdf · Sari Winahjoe, Gadjah Mada University, )ndonesia Yulia Arisnani Widyaningsih, Gadjah Mada University,
